WiFi (r8712u) no funciona después de actualizar a Ubuntu 16.04

WiFi (r8712u) no funciona después de actualizar a Ubuntu 16.04

Actualicé de Ubuntu 15.10 a 16.04 y mi wifi dejó de funcionar. Tengo un adaptador Wifi USB Asus y es capaz de detectar las señales wifi. Sin embargo, al hacer clic en el wifi de mi casa no puedo conectarme. He echado un vistazo a este problema.WiFi (r8712u) solo funciona después de hacer rmmod y modprobe pero no tuvo éxito.

¡Proporciono la siguiente información y espero que la comunidad de Ubuntu pueda ayudarme aquí! Avíseme si necesita más información para resolver el problema.

red de clase lshw

*-network               
       description: Ethernet interface
       product: 82566DC Gigabit Network Connection
       vendor: Intel Corporation
       physical id: 19
       bus info: pci@0000:00:19.0
       logical name: eth0
       version: 02
       serial: 00:19:d1:85:4b:d4
       capacity: 1Gbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.2.6-k firmware=1.1-0 latency=0 link=no multicast=yes port=twisted pair
       resources: irq:29 memory:90300000-9031ffff memory:90324000-90324fff ioport:30c0(size=32)
 *-network
       description: Wireless interface
       physical id: 1
       bus info: usb@1:3.3
       logical name: wlan0
       serial: f4:6d:04:8b:44:b1
       capabilities: ethernet physical wireless
       configuration: broadcast=yes driver=r8712u multicast=yes wireless=unassociated

lsusb

Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 005: ID 0bc2:3300 Seagate RSS LLC 
Bus 001 Device 004: ID 0b05:1791 ASUSTek Computer, Inc. WL-167G v3 802.11n Adapter [Realtek RTL8188SU]
Bus 001 Device 003: ID 046d:c52f Logitech, Inc. Unifying Receiver
Bus 001 Device 002: ID 05e3:0608 Genesys Logic, Inc. Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

lspci

00:00.0 Host bridge: Intel Corporation 82P965/G965 Memory Controller Hub (rev 02)
00:02.0 VGA compatible controller: Intel Corporation 82G965 Integrated Graphics Controller (rev 02)
00:03.0 Communication controller: Intel Corporation 82P965/G965 HECI Controller (rev 02)
00:19.0 Ethernet controller: Intel Corporation 82566DC Gigabit Network Connection (rev 02)
00:1a.0 USB controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #4 (rev 02)
00:1a.1 USB controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #5 (rev 02)
00:1a.7 USB controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #2 (rev 02)
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 02)
00:1c.0 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 1 (rev 02)
00:1c.1 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 2 (rev 02)
00:1c.2 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 3 (rev 02)
00:1c.3 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 4 (rev 02)
00:1c.4 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 5 (rev 02)
00:1d.0 USB controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #1 (rev 02)
00:1d.1 USB controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #2 (rev 02)
00:1d.2 USB controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #3 (rev 02)
00:1d.7 USB controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #1 (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev f2)
00:1f.0 ISA bridge: Intel Corporation 82801HB/HR (ICH8/R) LPC Interface Controller (rev 02)
00:1f.2 IDE interface: Intel Corporation 82801H (ICH8 Family) 4 port SATA Controller [IDE mode] (rev 02)
00:1f.3 SMBus: Intel Corporation 82801H (ICH8 Family) SMBus Controller (rev 02)
00:1f.5 IDE interface: Intel Corporation 82801HR/HO/HH (ICH8R/DO/DH) 2 port SATA Controller [IDE mode] (rev 02)
02:00.0 IDE interface: Marvell Technology Group Ltd. 88SE6101/6102 single-port PATA133 interface (rev b1)
06:00.0 Multimedia audio controller: ESS Technology ES1938/ES1946/ES1969 Solo-1 Audiodrive (rev 02)
06:03.0 FireWire (IEEE 1394): Texas Instruments TSB43AB22A IEEE-1394a-2000 Controller (PHY/Link) [iOHCI-Lynx]

rmmod r8712u && sudo modprobe r8712u(Intenté esto como se sugiere en el enlace mencionado anteriormente, pero no tuve ningún éxito. Incluso intenté reiniciar el administrador de red como se menciona en el enlace, pero ni siquiera tuve éxito).

[ 1732.118252] usbcore: deregistering interface driver r8712u
[ 1732.436048] usb 1-3.3: reset high-speed USB device number 4 using ehci-pci
[ 1732.652796] r8712u: module is from the staging directory, the quality is unknown, you have been warned.
[ 1732.653771] r8712u: register rtl8712_netdev_ops to netdev_ops
[ 1732.653777] usb 1-3.3: r8712u: USB_SPEED_HIGH with 4 endpoints
[ 1732.654323] usb 1-3.3: r8712u: Boot from EFUSE: Autoload OK
[ 1733.065831] usb 1-3.3: r8712u: CustomerID = 0x0010
[ 1733.065839] usb 1-3.3: r8712u: MAC Address from efuse = f4:6d:04:8b:44:b1
[ 1733.065845] usb 1-3.3: r8712u: Loading firmware from "rtlwifi/rtl8712u.bin"
[ 1733.069364] usbcore: registered new interface driver r8712u
[ 1733.101181] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 1733.808456] r8712u 1-3.3:1.0 wlan0: 1 RCR=0x153f00e
[ 1733.809196] r8712u 1-3.3:1.0 wlan0: 2 RCR=0x553f00e
[ 1733.916265] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 1733.973323] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready

(Un dato interesante aquí podría ser que cuando enciendo el punto de acceso en mi teléfono, puedo conectarme al wifi de mi teléfono con la misma configuración. Sin embargo, es al wifi de casa al que he tenido problemas para conectarme. He verificado y vuelto a verificar la contraseña que estoy ingresando y es correcta).

Editar: Agregar el contenido de wireless-info.txt aquí.

########## wireless info START ##########

Report from: 10 Jun 2016 00:34 IST +0530

Booted last: 10 Jun 2016 00:00 IST +0530

Script from: 26 May 2016 21:56 UTC +0000

##### release ###########################

Distributor ID: Ubuntu
Description:    Ubuntu 16.04 LTS
Release:    16.04
Codename:   xenial

##### kernel ############################

Linux 4.4.0-23-generic #41-Ubuntu SMP Mon May 16 23:03:32 UTC 2016 i686 i686 i686 GNU/Linux

Parameters: ro, quiet, splash, vt.handoff=7

##### desktop ###########################

sed: can't read /root/.dmrc: No such file or directory

Could not be determined.

##### lspci #############################

00:19.0 Ethernet controller [0200]: Intel Corporation 82566DC Gigabit Network Connection [8086:104b] (rev 02)
    Subsystem: Intel Corporation 82566DC Gigabit Network Connection [8086:0001]
    Kernel driver in use: e1000e

##### lsusb #############################

Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 005: ID 0bc2:3300 Seagate RSS LLC 
Bus 001 Device 004: ID 0b05:1791 ASUSTek Computer, Inc. WL-167G v3 802.11n Adapter [Realtek RTL8188SU]
Bus 001 Device 003: ID 046d:c52f Logitech, Inc. Unifying Receiver
Bus 001 Device 002: ID 05e3:0608 Genesys Logic, Inc. Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

##### PCMCIA card info ##################

##### rfkill ############################

##### lsmod #############################

r8712u                159744  0
cfg80211              499712  0

##### interfaces ########################

auto lo
iface lo inet loopback

##### ifconfig ##########################

eth0      Link encap:Ethernet  HWaddr <MAC 'eth0' [IF1]>  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Interrupt:20 Memory:90300000-90320000 

wlan0     Link encap:Ethernet  HWaddr <MAC 'wlan0' [IF2]>  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:5894 errors:0 dropped:2201 overruns:0 frame:0
          TX packets:6662 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:1879837 (1.8 MB)  TX bytes:1148881 (1.1 MB)

##### iwconfig ##########################

lo        no wireless extensions.

eth0      no wireless extensions.

wlan0     unassociated  Nickname:"rtl_wifi"
          Mode:Managed  Access Point: Not-Associated   Sensitivity:0/0  
          Retry:off   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality:0  Signal level:0  Noise level:0
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

##### route #############################

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface

##### resolv.conf #######################

nameserver 127.0.1.1

##### network managers ##################

Installed:

    NetworkManager

Running:

root      2451     1  0 Jun09 ?        00:00:01 /usr/sbin/NetworkManager --no-daemon

##### NetworkManager info ###############

GENERAL.DEVICE:                         wlan0
GENERAL.TYPE:                           wifi
GENERAL.NM-TYPE:                        NMDeviceWifi
GENERAL.VENDOR:                         Manufacturer Realtek 
GENERAL.PRODUCT:                        ASUS WL-167G V3
GENERAL.DRIVER:                         r8712u
GENERAL.DRIVER-VERSION:                 
GENERAL.FIRMWARE-VERSION:               
GENERAL.HWADDR:                         <MAC 'wlan0' [IF2]>
GENERAL.MTU:                            1500
GENERAL.STATE:                          30 (disconnected)
GENERAL.REASON:                         39 (Device disconnected by user or client)
GENERAL.UDI:                            /sys/devices/pci0000:00/0000:00:1a.7/usb1/1-3/1-3.3/1-3.3:1.0/net/wlan0
GENERAL.IP-IFACE:                       
GENERAL.IS-SOFTWARE:                    no
GENERAL.NM-MANAGED:                     yes
GENERAL.AUTOCONNECT:                    no
GENERAL.FIRMWARE-MISSING:               no
GENERAL.NM-PLUGIN-MISSING:              no
GENERAL.PHYS-PORT-ID:                   --
GENERAL.CONNECTION:                     --
GENERAL.CON-UUID:                       --
GENERAL.CON-PATH:                       --
GENERAL.METERED:                        unknown
CAPABILITIES.CARRIER-DETECT:            no
CAPABILITIES.SPEED:                     unknown
CAPABILITIES.IS-SOFTWARE:               no
WIFI-PROPERTIES.WEP:                    yes
WIFI-PROPERTIES.WPA:                    yes
WIFI-PROPERTIES.WPA2:                   yes
WIFI-PROPERTIES.TKIP:                   yes
WIFI-PROPERTIES.CCMP:                   yes
WIFI-PROPERTIES.AP:                     no
WIFI-PROPERTIES.ADHOC:                  yes
WIFI-PROPERTIES.2GHZ:                   yes
WIFI-PROPERTIES.5GHZ:                   no
CONNECTIONS.AVAILABLE-CONNECTION-PATHS: /org/freedesktop/NetworkManager/Settings/{0,2}
CONNECTIONS.AVAILABLE-CONNECTIONS[1]:   81d133ad-d1c3-4ebf-a108-7837c7e5e881 | Sid Mi Phone
CONNECTIONS.AVAILABLE-CONNECTIONS[2]:   4a6effa2-47de-4606-bdd6-13d9afcba61e | Sid

GENERAL.DEVICE:                         eth0
GENERAL.TYPE:                           ethernet
GENERAL.NM-TYPE:                        NMDeviceEthernet
GENERAL.VENDOR:                         Intel Corporation
GENERAL.PRODUCT:                        82566DC Gigabit Network Connection
GENERAL.DRIVER:                         e1000e
GENERAL.DRIVER-VERSION:                 3.2.6-k
GENERAL.FIRMWARE-VERSION:               1.1-0
GENERAL.HWADDR:                         <MAC 'eth0' [IF1]>
GENERAL.MTU:                            1500
GENERAL.STATE:                          20 (unavailable)
GENERAL.REASON:                         2 (Device is now managed)
GENERAL.UDI:                            /sys/devices/pci0000:00/0000:00:19.0/net/eth0
GENERAL.IP-IFACE:                       
GENERAL.IS-SOFTWARE:                    no
GENERAL.NM-MANAGED:                     yes
GENERAL.AUTOCONNECT:                    yes
GENERAL.FIRMWARE-MISSING:               no
GENERAL.NM-PLUGIN-MISSING:              no
GENERAL.PHYS-PORT-ID:                   --
GENERAL.CONNECTION:                     --
GENERAL.CON-UUID:                       --
GENERAL.CON-PATH:                       --
GENERAL.METERED:                        unknown
CAPABILITIES.CARRIER-DETECT:            yes
CAPABILITIES.SPEED:                     unknown
CAPABILITIES.IS-SOFTWARE:               no
WIRED-PROPERTIES.CARRIER:               off
CONNECTIONS.AVAILABLE-CONNECTION-PATHS: 

SSID          BSSID              MODE   CHAN  FREQ      RATE       SIGNAL  BARS  SECURITY   ACTIVE  * 
Sid Mi Phone  <MAC 'Sid Mi Phone' [AN1]>  Infra  6     2437 MHz  54 Mbit/s  100     ▂▄▆█  WPA2       no        
Sid           <MAC 'Sid' [AC1]>  Infra  10    2457 MHz  54 Mbit/s  56      ▂▄▆_  WPA1 WPA2  no        
Spark         <MAC 'Spark' [AN3]>  Infra  1     2412 MHz  54 Mbit/s  7       ▂___  WPA1 WPA2  no        

##### NetworkManager.state ##############

[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=true

##### NetworkManager.conf ###############

[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq

[ifupdown]
managed=false

##### NetworkManager profiles ###########

[[/etc/NetworkManager/system-connections/Sid Mi Phone]] (600 root)
[connection] id=Sid Mi Phone | type=wifi | permissions=user:sid:;
[wifi] mac-address=<MAC 'wlan0' [IF2]> | mac-address-blacklist= | ssid=Sid Mi Phone
[ipv4] method=auto
[ipv6] method=auto

[[/etc/NetworkManager/system-connections/Sid]] (600 root)
[connection] id=Sid | type=wifi | permissions=
[wifi] mac-address=<MAC 'wlan0' [IF2]> | mac-address-blacklist= | ssid=Sid
[ipv4] method=auto
[ipv6] method=auto

##### iw reg get ########################

Region: Asia/Kolkata (based on set time zone)

country 00: DFS-UNSET
    (2402 - 2472 @ 40), (N/A, 20), (N/A)
    (2457 - 2482 @ 40), (N/A, 20), (N/A), NO-IR
    (2474 - 2494 @ 20), (N/A, 20), (N/A), NO-OFDM, NO-IR
    (5170 - 5250 @ 80), (N/A, 20), (N/A), NO-IR
    (5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS, NO-IR
    (5490 - 5730 @ 160), (N/A, 20), (0 ms), DFS, NO-IR
    (5735 - 5835 @ 80), (N/A, 20), (N/A), NO-IR
    (57240 - 63720 @ 2160), (N/A, 0), (N/A)

##### iwlist channels ###################

lo        no frequency information.

eth0      no frequency information.

wlan0     14 channels in total; available frequencies :
          Channel 01 : 2.412 GHz
          Channel 02 : 2.417 GHz
          Channel 03 : 2.422 GHz
          Channel 04 : 2.427 GHz
          Channel 05 : 2.432 GHz
          Channel 06 : 2.437 GHz
          Channel 07 : 2.442 GHz
          Channel 08 : 2.447 GHz
          Channel 09 : 2.452 GHz
          Channel 10 : 2.457 GHz
          Channel 11 : 2.462 GHz
          Channel 12 : 2.467 GHz
          Channel 13 : 2.472 GHz
          Channel 14 : 2.484 GHz

##### iwlist scan #######################

lo        Interface doesn't support scanning.

eth0      Interface doesn't support scanning.

Channel occupancy:

      1   APs on   Frequency:2.457 GHz (Channel 10)

wlan0     Scan completed :
          Cell 01 - Address: <MAC 'Sid' [AC1]>
                    ESSID:"Sid"
                    Protocol:IEEE 802.11bgn
                    Mode:Master
                    Frequency:2.457 GHz (Channel 10)
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Extra:wpa_ie=dd1a0050f20101000050f20202000050f2020050f20401000050f202
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : TKIP CCMP
                        Authentication Suites (1) : PSK
                    Extra:rsn_ie=30180100000fac020200000fac02000fac040100000fac020000
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : TKIP CCMP
                        Authentication Suites (1) : PSK
                    Signal level=57/100  

##### module infos ######################

[r8712u]
filename:       /lib/modules/4.4.0-23-generic/kernel/drivers/staging/rtl8712/r8712u.ko
firmware:       rtlwifi/rtl8712u.bin
author:         Larry Finger
description:    rtl871x wireless lan driver
license:        GPL
srcversion:     C6F0E0D1D849C2145DD5F72
depends:        
staging:        Y
intree:         Y
vermagic:       4.4.0-23-generic SMP mod_unload modversions 686 
parm:           wifi_test:int
parm:           video_mode:int
parm:           chip_version:int
parm:           rfintfs:int
parm:           lbkmode:int
parm:           hci:int
parm:           network_mode:int
parm:           channel:int
parm:           mp_mode:int
parm:           wmm_enable:int
parm:           vrtl_carrier_sense:int
parm:           vcs_type:int
parm:           busy_thresh:int
parm:           ht_enable:int
parm:           cbw40_enable:int
parm:           ampdu_enable:int
parm:           rf_config:int
parm:           power_mgnt:int
parm:           low_power:int
parm:           ifname: Net interface name, wlan%d=default (string)
parm:           initmac:MAC-Address, default: use FUSE (charp)

[cfg80211]
filename:       /lib/modules/4.4.0-23-generic/kernel/net/wireless/cfg80211.ko
description:    wireless configuration support
license:        GPL
author:         Johannes Berg
srcversion:     25A45701AAA64DAC1E47D9D
depends:        
intree:         Y
vermagic:       4.4.0-23-generic SMP mod_unload modversions 686 
parm:           ieee80211_regdom:IEEE 802.11 regulatory domain code (charp)
parm:           cfg80211_disable_40mhz_24ghz:Disable 40MHz support in the 2.4GHz band (bool)

##### module parameters #################

[r8712u]
ampdu_enable: 1
busy_thresh: 40
cbw40_enable: 1
channel: 1
chip_version: 2
hci: 1
ht_enable: 1
ifname: wlan%d
initmac: (null)
lbkmode: 0
low_power: 0
mp_mode: 0
network_mode: 0
power_mgnt: 0
rf_config: 1
rfintfs: 2
vcs_type: 1
video_mode: 1
vrtl_carrier_sense: 2
wifi_test: 0
wmm_enable: 0

[cfg80211]
cfg80211_disable_40mhz_24ghz: N
ieee80211_regdom: 00

##### /etc/modules ######################

lp

##### modprobe options ##################

[/etc/modprobe.d/blacklist-ath_pci.conf]
blacklist ath_pci

[/etc/modprobe.d/blacklist-bcm43.conf]
blacklist b43
blacklist b43legacy
blacklist ssb
blacklist bcm43xx
blacklist brcm80211
blacklist brcmfmac
blacklist brcmsmac
blacklist bcma

[/etc/modprobe.d/blacklist.conf]
blacklist evbug
blacklist usbmouse
blacklist usbkbd
blacklist eepro100
blacklist de4x5
blacklist eth1394
blacklist snd_intel8x0m
blacklist snd_aw2
blacklist i2c_i801
blacklist prism54
blacklist garmin_gps
blacklist asus_acpi
blacklist snd_pcsp
blacklist pcspkr
blacklist amd76x_edac

[/etc/modprobe.d/blacklist-rare-network.conf]
alias net-pf-3 off
alias net-pf-6 off
alias net-pf-9 off
alias net-pf-11 off
alias net-pf-12 off
alias net-pf-19 off
alias net-pf-21 off
alias net-pf-36 off

[/etc/modprobe.d/iwlwifi.conf]
remove iwlwifi \
(/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \
&& /sbin/modprobe -r mac80211

[/etc/modprobe.d/mlx4.conf]
softdep mlx4_core post: mlx4_en

##### rc.local ##########################

exit 0

##### pm-utils ##########################

##### udev rules ########################

[/etc/udev/rules.d/70-persistent-net.rules]
# PCI device 0x8086:0x104b (e1000e)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC 'eth0' [IF1]>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
# USB device 0x:0x (r8712u)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC 'wlan0' [IF2]>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0"

##### dmesg #############################

[  252.098895] r8712u: module is from the staging directory, the quality is unknown, you have been warned.
[  252.099852] r8712u: register rtl8712_netdev_ops to netdev_ops
[  252.099859] usb 1-3.3: r8712u: USB_SPEED_HIGH with 4 endpoints
[  252.100405] usb 1-3.3: r8712u: Boot from EFUSE: Autoload OK
[  252.509037] usb 1-3.3: r8712u: CustomerID = 0x0010
[  252.509045] usb 1-3.3: r8712u: MAC Address from efuse = <MAC 'wlan0' [IF2]>
[  252.509051] usb 1-3.3: r8712u: Loading firmware from "rtlwifi/rtl8712u.bin"
[  252.621139] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[  253.328535] r8712u 1-3.3:1.0 wlan0: 1 RCR=0x153f00e
[  253.329400] r8712u 1-3.3:1.0 wlan0: 2 RCR=0x553f00e
[  253.436347] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready (repeated 6 times)
[  354.796336] e1000e: eth0 NIC Link is Down
[  355.289572] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready (repeated 2 times)
[  355.766426] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready (repeated 7 times)
[  604.735424] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 1020.413046] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready (repeated 2 times)
[ 1447.413629] r8712u: module is from the staging directory, the quality is unknown, you have been warned.
[ 1447.414604] r8712u: register rtl8712_netdev_ops to netdev_ops
[ 1447.414610] usb 1-3.3: r8712u: USB_SPEED_HIGH with 4 endpoints
[ 1447.415169] usb 1-3.3: r8712u: Boot from EFUSE: Autoload OK
[ 1447.865302] usb 1-3.3: r8712u: CustomerID = 0x0010
[ 1447.865310] usb 1-3.3: r8712u: MAC Address from efuse = <MAC 'wlan0' [IF2]>
[ 1447.865316] usb 1-3.3: r8712u: Loading firmware from "rtlwifi/rtl8712u.bin"
[ 1448.079037] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 1448.784428] r8712u 1-3.3:1.0 wlan0: 1 RCR=0x153f00e
[ 1448.785170] r8712u 1-3.3:1.0 wlan0: 2 RCR=0x553f00e
[ 1448.892384] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready (repeated 3 times)
[ 1732.652796] r8712u: module is from the staging directory, the quality is unknown, you have been warned.
[ 1732.653771] r8712u: register rtl8712_netdev_ops to netdev_ops
[ 1732.653777] usb 1-3.3: r8712u: USB_SPEED_HIGH with 4 endpoints
[ 1732.654323] usb 1-3.3: r8712u: Boot from EFUSE: Autoload OK
[ 1733.065831] usb 1-3.3: r8712u: CustomerID = 0x0010
[ 1733.065839] usb 1-3.3: r8712u: MAC Address from efuse = <MAC 'wlan0' [IF2]>
[ 1733.065845] usb 1-3.3: r8712u: Loading firmware from "rtlwifi/rtl8712u.bin"
[ 1733.101181] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 1733.808456] r8712u 1-3.3:1.0 wlan0: 1 RCR=0x153f00e
[ 1733.809196] r8712u 1-3.3:1.0 wlan0: 2 RCR=0x553f00e
[ 1733.916265] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready (repeated 4 times)
[ 2012.843797] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready

########## wireless info END ############

Respuesta1

Esta es la configuración que uso para mi configuración wifi 16.04 y funciona perfectamente.

wifi automático0

iface wlan0 inet estático

dirección 10.1.1.2

máscara de red 255.0.0.0

transmisión 10.255.255.255

puerta de enlace 10.1.1.1

wpa-ssid nombre-red

clave precompartida wpa-psk

Cambie los parámetros en consecuencia, por supuesto.

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